Saute onions till pink, and then add corn beef and saute till it becomes brown. Add pepper and salt to taste and set aside. Into a large skillet, lightly coat with oil, pour in half mixture of the beaten eggs. Tilt the pan so that the eggs spread out evenly. Cook over a moderate heat.ensuring the omelette does not stick to the bottom of the pan. Cook till the bottom is set and the top is still moist. Spoon a generous mixture of the corn beef into the middle of the omelet. Using a spatula lift the sides of the omelette to fold it into half. Tip onto a plate and serve immediately. Use the remaining egg mixture to make one more omelette.